export declare interface TrustedHTML {
    __brand__: 'TrustedHTML';
}
export declare interface TrustedTypePolicyFactory {
    createPolicy(policyName: string, policyOptions: {
        createHTML?: (input: string) => string;
    }): TrustedTypePolicy;
}
export declare interface TrustedTypePolicy {
    createHTML(input: string): TrustedHTML;
}
/**
 * Unsafely promote a string to a TrustedHTML, falling back to strings when
 * Trusted Types are not available.
 * @security This is a security-sensitive function; any use of this function
 * must go through security review. In particular, it must be assured that the
 * provided string will never cause an XSS vulnerability if used in a context
 * that will be interpreted as HTML by a browser, e.g. when assigning to
 * element.innerHTML.
 */
export declare function trustedHTMLFromString(html: string): TrustedHTML;